<template>
  <div>
    <h2>我是關(guān)于</h2>
    <p>我是關(guān)于內(nèi)容, 呵呵呵</p>
  </div>
</template>

<script>
  export default {
    name: "About"
  }
</script>

<style scoped>

</style>

<template>
  <div>
    <h2>我是首頁(yè)</h2>
    <p>我是首頁(yè)內(nèi)容, 哈哈哈</p>
  </div>
</template>

<script>
  export default {
    name: "Home"
  }
</script>

<style scoped>

</style>

// 創(chuàng)建VueRouter對(duì)象
const routes = [
    {
        path: '',
        <!--路由的默認(rèn)值-->
        // 頁(yè)面默認(rèn)加載  直接訪問(wèn)主頁(yè)
        redirect: '/home'
    },
    {
        path: '/home',
        component: Home
    },
    {
        path: '/about',
        component: About
    },
]

const router = new VueRouter({
    // 配置路由和組件之間的應(yīng)用關(guān)系
    routes,
    mode:"history",
    linkActiveClass:"active"
})

<template>
  <div id="app">
    <router-link to="/home">首頁(yè)</router-link>
    <router-link to="about">About</router-link>
    <router-view/>
  </div>
</template>

<template>
    <div>
        我是首頁(yè)內(nèi)容
    </div>
</template>

import VueRouter from 'vue-router'
import Vue from 'vue'
import Home from '../components/Home'

// 1、通過(guò)Vue.use(插件名) 安裝插件
Vue.use(VueRouter)

// 2、創(chuàng)建VueRouter對(duì)象
const routes = [
    {
        path: '/home',
        component: Home
    }
]

// 3、配置路由和組件之間映射關(guān)系
const router = new VueRouter({
    routes
})

// 4、將router對(duì)象傳入Vue實(shí)例
export default router

<template>
  <div id="app">
    <!-- 渲染超鏈接 a -->
    <router-link to="/home" tag="button">主頁(yè)</router-link>
    <router-link to="/about" tag="button">關(guān)于</router-link>

    <!-- 動(dòng)態(tài)渲染組件 -->
    <router-view></router-view>
  </div>
</template>

<script>
export default {
  name: "App",
  components: {},
};
</script>

<style>
</style>

<router-link>:該標(biāo)簽是一個(gè)vue-router已經(jīng)內(nèi)置的組件，最終會(huì)被渲染一個(gè)a鏈接
<router-view>:該標(biāo)簽會(huì)根據(jù)當(dāng)前路徑，動(dòng)態(tài)渲染出不同組件
網(wǎng)頁(yè)的其他內(nèi)容，比如頂部的標(biāo)題導(dǎo)航，或者說(shuō) 底部的一些版權(quán)信息和<router-view>處于同一登記
路由切換時(shí)候，切換就是<router-view>掛載的組件，其他內(nèi)容不改變

<template>
  <div id="app">
    <!-- 渲染超鏈接 a -->
    <!-- <router-link to="/home" tag="h1" replace>主頁(yè)</router-link> -->
    <!-- <router-link to="/about" tag="h1" replace  active-class>關(guān)于</router-link> -->
    <button @click="handleHome">主頁(yè)</button>
    <button @click="handleAbout">關(guān)于</button>
    <!-- 動(dòng)態(tài)渲染組件 -->
    <router-view></router-view>
  </div>
</template>

<script>
export default {
  name: "App",
  components: {},
  methods:{
    handleHome(){
      this.$router.push('/home')
    },
    handleAbout(){
      this.$router.push('/about')
    }
  }
};
</script>

<style></style>

// 配置路由相關(guān)的信息
import Vue from 'vue'
import VueRouter from "vue-router"

import Home from '../components/Home'
import About from '../components/About'
import User from '../components/User'
// 通過(guò)Vue.use(插件)，安裝插件
Vue.use(VueRouter)

// 創(chuàng)建VueRouter對(duì)象
const routes = [
    {
        path: '',
        redirect: '/home'
    },
    {
        path: '/home',
        component: Home
    },
    {
        path: '/about',
        component: About
    }, 
    <!--這是關(guān)鍵代碼-->
    {
        path: '/user/:id',
        component: User
    },
]

const router = new VueRouter({
    // 配置路由和組件之間的應(yīng)用關(guān)系
    routes,
    mode: "history",
    linkActiveClass: "active"
})

// 將router對(duì)象傳入Vue實(shí)例
export default router

<template>
    <div>
        <h1>我是APP頁(yè)面</h1>
        {{$route.params.id}}
    </div>
</template>

    <router-link to="/home/極客鼠" >測(cè)試獲取用戶名</router-link><br>

// 配置路由相關(guān)的信息
import Vue from 'vue'
import VueRouter from "vue-router"

const Home = () => import ('../components/Home')
const About = () => import ('../components/About')
const User = () => import ('../components/User')
// 通過(guò)Vue.use(插件)，安裝插件
Vue.use(VueRouter)

// 創(chuàng)建VueRouter對(duì)象
const routes = [
    {
        path: '',
        redirect: '/home'
    },
    {
        path: '/home',
        component: Home
    },
    {
        path: '/about',
        component: About
    }, {
        path: '/user/:id',
        component: User
    },
]

const router = new VueRouter({
    // 配置路由和組件之間的應(yīng)用關(guān)系
    routes,
    mode: "history",
    linkActiveClass: "active"
})

// 將router對(duì)象傳入Vue實(shí)例
export default router

<template>
  <div id="about">最新消息</div>
</template>
<script>

</script>

<template>
  <div id="about">新聞內(nèi)容</div>
</template>
<script>

</script>

import Vue from 'vue'
import VueRouter from 'vue-router'
const Home = () => import('../components/Home')
const About = () => import('../components/About')
const Message = () => import('../components/Message')
const News = () => import('../components/News')

// 1、通過(guò)Vue.use(插件名) 安裝插件
Vue.use(VueRouter);

// 2、創(chuàng)建VueRouter對(duì)象
const routes = [
    {
        path:'/home',
        component:Home,
        children:[
            {
                path:'news',
                component: News
            },
            {
                path:'message',
                component: Message
            }
        ]
    },
    {
        path: '/home/:username',
        component: Home
    },
    
    {
        path: '/about',
        component: About
    }
]

// 3、配置路由和組件之間映射關(guān)系
const router = new VueRouter({
    routes,
    mode: 'history',
    // linkActiveClass: 'active'
})

// 4、將router對(duì)象傳入Vue實(shí)例
export default router

<template>
  <div id="home">
    我是首頁(yè)內(nèi)容<br>

    <router-link to="/home/news"> 新聞</router-link>
    <router-link to="/home/message"> 消息</router-link>
    <router-view></router-view>
    <!-- <h2>用戶名：{{ $route.params.username }}</h2> -->
  </div>
</template>
<script>
export default {
  name: "Home",
};
</script>

{
        path: '/user',
        component: User,
        children: [
            {
                path: 'message',
                component: Message,
            },
            {
                path: 'news',
                component: News,
            },
            // 重定向 /user/news
            {
                path: '',
                redirect: 'news',
            },
        ]
    },

<template>
  <div>
    <h2>我是Profile頁(yè)面</h2>
    <p>我是profile頁(yè)面具體內(nèi)容</p>
    <!--獲取字符串入?yún)?譬如：/profile/123-->
    <p>$route.params:{{ $route.params }}</p>
    <!--獲取對(duì)象類(lèi)型入?yún)?譬如: /profile?name=1&age=10-->
    <p>$route.query:{{ $route.query }}</p>
  </div>
</template>

<script>
export default {
  name: "Profile",
};
</script>

<style scoped>
</style>

const Profile = () => import('../components/Profile')
    {
        path: '/profile/:id',
        component: Profile
    }

 <router-link
      :to="{
        path: '/profile/' + 123,
        query: { name: 'geekmice', hobby: '籃球' }
      }"
      tag="button"
      >router-link傳遞參數(shù)</router-link
    >

    <button @click="jsTransferParams">js傳遞參數(shù)</button>
   jsTransferParams() {
      this.$router.push({
        path: "/profile/" + 666,
        query: { name: "geekmice", hobby: "探索黑科技" },
      });
    },
    
    profile.vue獲取參數(shù)
     <p>$route.params:{{ $route.params }}</p>
    <p>$route.query:{{ $route.query }}</p>

// 配置路由相關(guān)的信息
import Vue from 'vue'
import VueRouter from "vue-router"

const Home = () => import('../components/Home')
const About = () => import('../components/About')
const User = () => import('../components/User')
const Message = () => import('../components/Message')
const News = () => import('../components/News')
const Profile = () => import('../components/Profile')

// 通過(guò)Vue.use(插件)，安裝插件
Vue.use(VueRouter)

// 創(chuàng)建VueRouter對(duì)象
const routes = [
    {
        path: '',
        redirect: '/home'
    },
    {
        path: '/home',
        component: Home,
        meta: {
            title: "首頁(yè)"
        }
    },
    {
        path: '/profile/:id',
        component: Profile,
        meta: {
            title: "檔案"
        }
    },
    {
        path: '/about',
        component: About,
        meta: {
            title: "關(guān)于"
        }
    }, {
        path: '/user',
        component: User,
        children: [
            {
                path: 'message',
                component: Message,
            },
            {
                path: 'news',
                component: News,
            },
            {
                path: '',
                redirect: 'news',
            },
        ]
    },
]

const router = new VueRouter({
    // 配置路由和組件之間的應(yīng)用關(guān)系
    routes,
    mode: "history",
    linkActiveClass: "active"
})

router.afterEach((to, from, next) => {
    document.title = to.matched[0].meta.title;
    next()
})

// 將router對(duì)象傳入Vue實(shí)例
export default router

<template>
    <div>
        <h1>開(kāi)始頁(yè)面</h1>
        <input type="text" placeholder="請(qǐng)輸入。。。">
    </div>
</template>

<template>
    <div>
        <h1>不需要緩存頁(yè)面</h1>
        <input type="text" placeholder="請(qǐng)輸入">
    </div>
</template>

const KeepStart = () => import('../components/KeepStart')
const KeepEnd = () => import('../components/KeepEnd')
  {
        path: '/keepStart',
        component: KeepStart,
        name:'keepStart',
        meta: {
            keepAlive: true
        }
    },
    {
        path: '/keepEnd',
        name:'keepEnd',
        component: KeepEnd,
        meta: {
            keepAlive: false
        }
    }

    <router-link to="/keepStart" tag="button">keepstart頁(yè)面</router-link>
    <router-link to="/keepEnd" tag="button">keepend頁(yè)面</router-link>
    <!-- 動(dòng)態(tài)渲染組件 -->
    <!-- <router-view></router-view> -->
    <keep-alive>
      <router-view v-if="$route.meta.keepAlive"></router-view>
    </keep-alive>
    <router-view v-if="!$route.meta.keepAlive"></router-view>

vue create navbar

<template>
  <div id="app">
    <div id="tab-bar">
      <div id="tab-bar-item">首頁(yè)</div>
      <div id="tab-bar-item">分類(lèi)</div>
      <div id="tab-bar-item">購(gòu)物車(chē)</div>
      <div id="tab-bar-item">我的</div>
    </div>
  </div>
</template>

<script>
export default {
  name: "App",
  components: {},
};
</script>

<style>
/* 引入css樣式 */
@import url("./assets/css/base.css");

#tab-bar {
  display: flex;
  background-color: rgb(246, 246, 246);

  /* 絕對(duì)定位 */
  position: fixed;
  left: 0;
  bottom: 0;
  right: 0;
}

#tab-bar-item {
  flex: 1;
  text-align: center;
  height: 49px;


}
</style>

body{
    padding: 0;
    margin: 0;
}

<template>
  <div id="tab-bar">
    <slot></slot>
  </div>
</template>

<script>
  export default {
    name: "TabBar"
  }
</script>

<style scoped>
  #tab-bar {
    display: flex;
    background-color: #f6f6f6;

    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;

    box-shadow: 0 -1px 1px rgba(100,100,100,.2);
  }
</style>

<template>
  <!--所有的item都展示同一個(gè)圖片, 同一個(gè)文字-->
  <div class="tab-bar-item" @click="itemClick">
    <div v-if="!isActive"><slot name="item-icon"></slot></div>
    <div v-else><slot name="item-icon-active"></slot></div>
    <div :style="activeStyle"><slot name="item-text"></slot></div>
  </div>
</template>

<script>
  export default {
    name: "TabBarItem",
    props: {
      path: String,
      activeColor: {
        type: String,
        default: 'red'
      }
    },
    data() {
      return {
        // isActive: true
      }
    },
    computed: {
      isActive() {
        // /home -> item1(/home) = true
        // /home -> item1(/category) = false
        // /home -> item1(/cart) = true
        // /home -> item1(/profile) = true
        return this.$route.path.indexOf(this.path) !== -1
      },
      activeStyle() {
        return this.isActive ? {color: this.activeColor} : {}
      }
    },
    methods: {
      itemClick() {
        this.$router.replace(this.path)
      }
    }
  }
</script>

<style scoped>
  .tab-bar-item {
    flex: 1;
    text-align: center;
    height: 49px;
    font-size: 14px;
  }

  .tab-bar-item img {
    width: 24px;
    height: 24px;
    margin-top: 3px;
    vertical-align: middle;
    margin-bottom: 2px;
  }
</style>

import Vue from 'vue'
import VueRouter from 'vue-router'

const Home = () => import('../views/home/Home')
const Category = () => import('../views/category/Category')
const Cart = () => import('../views/cart/Cart')
const Profile = () => import('../views/profile/Profile')

// 1.安裝插件
Vue.use(VueRouter)

// 2.創(chuàng)建路由對(duì)象
const routes = [
  {
    path: '',
    redirect: '/home'
  },
  {
    path: '/home',
    component: Home
  },
  {
    path: '/category',
    component: Category
  },
  {
    path: '/cart',
    component: Cart
  },
  {
    path: '/profile',
    component: Profile
  }
]
const router = new VueRouter({
  routes,
  mode: 'history'
})

// 3.導(dǎo)出router
export default router